Lempor ejector
The Lempor ejector is a steam locomotive exhaust system developed by noted Argentine locomotive engineer Livio Dante Porta. The ejector's name is a portmanteau of the names of Porta and Belgian locomotive engineer Maurice Lemaître. The Lempor ejector follows the principles of the de Laval nozzle.[1]
Operation
In a steam locomotive, draft is produced in the firebox by exhausting the steam coming from the cylinders into the Chimney via a nozzle or 'blast pipe' this creates a vacuum in the Smokebox. The Lempor ejector is a development of similar multiple orifice/nozzle ejectors which create either a stronger vacuum or the same vacuum more efficiently by presenting less 'back pressure' or resistance to the exhausting cylinder.
Results
The Lempor exhaust is claimed to deliver a 100% improvement in draughting capacity over traditional exhaust systems and a 40% increase in ejector performance.[2][citation needed]
References
External links
- Lempor Exhaust on The Ultimate Steam Page.
- v
- t
- e
Short hood / Long hood
- Cab forward
- Sharknose
- Steeplecab
- Cab unit
- Hood unit
- Cowl unit
- Boxcab
- Dual Control Stand
- AAR wheel arrangement
- UIC classification
- Swiss classification
- Whyte notation
This rail-transport related article is a stub. You can help Wikipedia by expanding it. |
- v
- t
- e